Paper leveling component of offset press paper blocking device

Abstract

The utility model relates to the technical field of leveling components, in particular to a paper leveling component of an offset press paper blocking device, which comprises a workbench, the lower end of the workbench is fixedly connected with a plurality of supporting legs, the upper end of the workbench is provided with a sliding groove, and the sliding groove is slidably connected with a buffer plate. A plurality of buffer springs are fixedly connected between the buffer plate and the sliding groove, a limiting assembly is arranged on the buffer plate, and a leveling assembly is further arranged at the upper end of the workbench. Paper of different widths can be limited through the limiting assembly by adjusting the distance between the two limiting plates, the situation that displacement is prone to occurring when the paper is leveled is avoided, when the flattening roller abuts against the paper, the buffer plate descends, the buffer spring is in a compressed state, the flattening roller and the paper are better attached, and the flattening effect is improved. The paper leveling effect is further improved, and the problems that uneven paper influences paper feeding, printing quality and the like in the production process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of leveling components, in particular to a paper leveling component of a paper stop device of an offset printing machine. Background Art

[0002] An offset printing press is a type of lithographic printing press. During printing, the printed image is first printed from the printing plate onto a rubber cylinder, and then transferred to the paper by the rubber cylinder. Offset printing presses can be divided into sheet-fed offset printing presses and web offset printing presses according to the different paper feeding methods. A sheet-fed offset printing press is a lithographic printing press used for printing high-end commercial printed materials and packaging printed materials. It is the mainstream of modern paper printing.

[0003] Most of the paper used in the production process of existing offset printing machines is cut from roll paper into flat sheets before offset printing. After cutting, these papers often encounter surface unevenness, such as bending, ruffles, waves and other deformations. However, existing offset printing machines lack paper flatness. During the production process, these uneven papers not only affect paper feeding and printing quality, but also seriously cause equipment downtime and other problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a paper leveling component of a paper stop device of an offset printing press, which can effectively solve the problem that the existing offset printing presses in the prior art lack paper leveling.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The utility model provides a paper leveling component of a paper stopper device of an offset printing machine, comprising a workbench, a plurality of supporting legs fixedly connected to the lower end of the workbench, a sliding groove formed at the upper end of the workbench, a buffer plate slidably connected to the sliding groove, a plurality of buffer springs fixedly connected between the buffer plate and the sliding groove, a limit assembly provided on the buffer plate, and a leveling assembly further provided at the upper end of the workbench;

[0007] The leveling assembly includes a first U-shaped plate fixedly connected to the upper end of the workbench, the upper end of the first U-shaped plate is fixedly connected to a second U-shaped plate, the upper end of the second U-shaped plate is fixedly installed with a second rotating motor, the output end of the second rotating motor passes through the second U-shaped plate and is coaxially fixedly connected to a screw, the rod body of the screw is threadedly connected to a lifting plate, the lower end of the lifting plate is symmetrically fixedly connected to two connecting rods, the lower ends of the two connecting rods pass through the first U-shaped plate and are commonly fixedly connected to a mounting frame, and a flattening roller is rotatably installed on the mounting frame.

[0008] According to the above-mentioned paper leveling component of the paper stopping device of an offset printing machine, the limiting assembly includes a limiting groove opened at the upper end of the buffer plate, a mounting plate is fixedly connected in the limiting groove, a bidirectional threaded rod is rotatably connected to the mounting plate, and a first rotating motor for driving the bidirectional threaded rod to rotate is also fixedly installed at the other end of the mounting plate, the rod body of the bidirectional threaded rod is symmetrically threadedly connected to two threaded sleeves, and the upper end of the threaded sleeve is fixedly connected to the limiting plate.

[0009] According to the above-mentioned paper leveling component of the paper stop device of an offset printing press, the limiting groove is square in shape, and the threaded sleeve is slidably connected to the limiting groove.

[0010] According to the above-mentioned paper leveling component of the paper stop device of an offset printing press, when the buffer spring is in the original length state, the upper end surface of the buffer plate is higher than the upper end surface of the workbench, and the buffer plate never leaves the sliding groove.

[0011] According to the above-mentioned paper leveling component of the paper stop device of an offset printing press, paper is placed on the upper end of the buffer plate, and the width of the paper is smaller than the width of the leveling roller.

[0012] According to the above-mentioned paper leveling component of the paper stop device of an offset printing press, the width of the paper is smaller than the maximum distance between the two limiting plates.

[0013] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0014] The utility model sets a limit component before the roller pressing and adjusts the distance between the two limit plates, which can limit the paper of different widths and avoid the situation that the paper is easily displaced when it is flattened. When the flattening roller contacts the paper, the buffer plate descends and the buffer spring is in a compressed state. Under the elastic force of the buffer spring, the flattening roller and the paper are more closely fitted, which further increases the flattening effect of the paper and reduces the problems of uneven paper affecting paper feeding and printing quality during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0016] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0017] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle;

[0018] Figure 3 for Figure 3 Schematic diagram of the structure of the middle leveling component;

[0019] Figure 4 for Figure 2 Schematic diagram of the structure with part A enlarged.

[0020] Figure numerals: 1. workbench; 2. support leg; 3. sliding groove; 4. buffer plate; 5. buffer spring; 6. limit groove; 7. mounting plate; 8. bidirectional threaded rod; 9. first rotating motor; 10. threaded sleeve; 101. limit plate; 11. first U-shaped plate; 12. second U-shaped plate; 13. screw; 14. second rotating motor; 15. lifting plate; 16. connecting rod; 17. mounting frame; 18. flattening roller. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example: Refer to Figures 1 to 4 A paper leveling component of a paper stop device of an offset printing machine includes a workbench 1, and a plurality of supporting legs 2 are fixedly connected to the lower end of the workbench 1. The device is connected to a transmission component to deliver paper to the workbench 1.

[0024] A sliding groove 3 is provided at the upper end of the workbench 1, and a buffer plate 4 is slidably connected to the sliding groove 3. A plurality of buffer springs 5 ​​are fixedly connected between the buffer plate 4 and the sliding groove 3. When the buffer spring 5 is in its original length state, the upper end surface of the buffer plate 4 is higher than the upper end surface of the workbench 1, and the buffer plate 4 never leaves the sliding groove 3, ensuring that when the flattening roller 18 descends to abut against the paper, the buffer plate 4 descends and the buffer spring 5 is in a compressed state. Under the elastic force of the buffer spring 5, the flattening roller 18 is more closely fitted to the paper, and the rolling effect is better.

[0025] A limiting assembly is provided on the buffer plate 4. Specifically, the limiting assembly includes a limiting groove 6 opened at the upper end of the buffer plate 4, a mounting plate 7 is fixedly connected in the limiting groove 6, and a bidirectional threaded rod 8 is rotatably connected to the mounting plate 7. A first rotating motor 9 for driving the bidirectional threaded rod 8 to rotate is also fixedly installed on the other end of the mounting plate 7. The rod body of the bidirectional threaded rod 8 is symmetrically threaded with two threaded sleeves 10. The limiting groove 6 is square in shape, and the threaded sleeve 10 is slidably connected to the limiting groove 6. The square limiting groove 6 can limit the threaded sleeve 10 to ensure that when the bidirectional threaded rod 8 rotates, the threaded sleeve 10 can slide horizontally on the rod body of the bidirectional threaded rod 8.

[0026] The upper end of the threaded sleeve 10 is fixedly connected to the limiting plate 101. The width of the paper is smaller than the maximum distance between the two limiting plates 101, ensuring that the limiting plate 101 can limit the paper and avoid displacement when the paper is flattened.

[0027] A leveling assembly is also provided at the upper end of the workbench 1. Specifically, the leveling assembly includes a first U-shaped plate 11 fixedly connected to the upper end of the workbench 1, and the upper end of the first U-shaped plate 11 is fixedly connected to the second U-shaped plate 12. The upper end of the second U-shaped plate 12 is fixedly installed with a second rotating motor 14. The output end of the second rotating motor 14 passes through the second U-shaped plate 12 and is coaxially fixedly connected to a screw 13. The rod body of the screw 13 is threadedly connected to a lifting plate 15. The lower end of the lifting plate 15 is symmetrically fixedly connected to two connecting rods 16. The lower ends of the two connecting rods 16 pass through the first U-shaped plate 11 and are fixedly connected to a mounting bracket 17. The lower ends of the two connecting rods 16 pass through the first U-shaped plate 11 to ensure that when the second rotating motor 14 drives the screw 13 to rotate, the lifting plate 15 is driven to slide vertically on the rod body of the screw 13.

[0028] A flattening roller 18 is rotatably mounted on the mounting frame 17 , and paper is placed on the upper end of the buffer plate 4 , and the width of the paper is smaller than the width of the flattening roller 18 , ensuring that the flattening roller 18 can completely roll the paper and ensure the rolling effect.

[0029] The working principle of this utility model is as follows:

[0030] When in use, the distance between the two limit plates 101 is adjusted according to the width of the paper, and the first rotary motor 9 is turned on to drive the bidirectional threaded rod 8 to rotate, and drive the two threaded sleeves 10 to slide horizontally relative to or opposite to each other on the rod body of the bidirectional threaded rod 8, thereby adjusting the distance between the two limit plates 101, which can limit papers of different widths. The second rotary motor 14 drives the screw 13 to rotate, and drives the mounting frame 17 and the flattening roller 18 to move in the vertical direction through the two connecting rods 16. The flattening roller 18 and the buffer plate 4 can be adjusted according to the thickness of the paper, thereby ensuring the flattening effect of the paper. When the flattening roller 18 abuts against the paper, the buffer plate 4 descends, and the buffer spring 5 is in a compressed state. Under the elastic force of the buffer spring 5, the flattening roller 18 is more closely fitted to the paper, further increasing the flattening effect on the paper.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A paper leveling component of a paper stopper device of an offset printing press, characterized in that: The invention comprises a workbench (1), wherein the lower end of the workbench (1) is fixedly connected to a plurality of supporting legs (2), the upper end of the workbench (1) is provided with a sliding groove (3), the sliding groove (3) is slidably connected to a buffer plate (4), a plurality of buffer springs (5) are fixedly connected between the buffer plate (4) and the sliding groove (3), a limiting assembly is provided on the buffer plate (4), and a leveling assembly is also provided at the upper end of the workbench (1); The leveling assembly comprises a first U-shaped plate (11) fixedly connected to the upper end of the workbench (1), the upper end of the first U-shaped plate (11) is fixedly connected to a second U-shaped plate (12), the upper end of the second U-shaped plate (12) is fixedly mounted with a second rotating motor (14), the output end of the second rotating motor (14) passes through the second U-shaped plate (12) and is coaxially fixedly connected to a screw rod (13), the rod body of the screw rod (13) is threadedly connected to a lifting plate (15), the lower end of the lifting plate (15) is symmetrically fixedly connected to two connecting rods (16), the lower ends of the two connecting rods (16) pass through the first U-shaped plate (11) and are fixedly connected to a mounting frame (17), and a flattening roller (18) is rotatably mounted on the mounting frame (17).

2. The paper leveling component of the paper stopper device of an offset printing press according to claim 1, characterized in that: The limiting assembly includes a limiting groove (6) opened at the upper end of the buffer plate (4), a mounting plate (7) is fixedly connected in the limiting groove (6), the mounting plate (7) is rotatably connected to a bidirectional threaded rod (8), and a first rotating motor (9) for driving the bidirectional threaded rod (8) to rotate is also fixedly installed at the other end of the mounting plate (7), the rod body of the bidirectional threaded rod (8) is symmetrically threaded with two threaded sleeves (10), and the upper end of the threaded sleeve (10) is fixedly connected to the limiting plate (101).

3. The paper leveling component of the paper stop device of an offset printing press according to claim 2, characterized in that: The limiting groove (6) is square in shape, and the threaded sleeve (10) is slidably connected to the limiting groove (6).

4. The paper leveling component of the paper stopper device of an offset printing press according to claim 1, characterized in that: When the buffer spring (5) is in its original length, the upper end surface of the buffer plate (4) is higher than the upper end surface of the workbench (1), and the buffer plate (4) never leaves the sliding groove 3.

5. The paper leveling component of the paper stop device of an offset printing press according to claim 4, characterized in that: Paper is placed on the upper end of the buffer plate (4), and the width of the paper is smaller than the width of the flattening roller (18).

6. The paper leveling component of the paper stop device of an offset printing press according to claim 5, characterized in that: The width of the paper is smaller than the maximum distance between the two limiting plates (101).

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